Discovered in the 1870s, the discovery and application of electricity set off a second wave of industrialization. It has become one of the three scientific and technological revolutions in the world since the 18th century in human history, and science and technology have changed people's lives since then. The large-scale power system appearing in the 20th century is one of the most important achievements in the history of human engineering science. It is a power production and consumption system composed of power generation, transmission, transformation, distribution and electricity consumption. It converts natural primary energy into electricity through mechanical energy devices, and then supplies electricity to users through transmission, transformation and distribution.
The main ways of electricity generation are: thermal power generation (coal and other combulators), solar power generation, large-capacity wind power technology, nuclear power generation, hydrogen power generation, water power generation and so on.